305 Stainless Steel – The Ultimate Guide

305 Stainless Steel

machining features, applications, and other features – let’s delve in.

What is Stainless Steel Grade 305?

305 SS is also called UNS S30500. It is an austenitic SS with chromium and nickel content. Also, it has a slow rate of work hardening.


Advantages of 305 Stainless Steel

Stainless Steel Classification
Stainless Steel Classification


  1. Protection against Rust or Corrosion- Rusting is not something you see with 305 due to the elements of chromium and nickel within its properties.
  1. Has Superior Mechanical Qualities- 305 is made up with a very strong tensile capacity which makes this alloy strong and versatile to use in different ways.
  1. Has a Simple Maintenance Feature- Maintaining products made of 305 SS is not difficult at all.
  1. Friendly to the Environment- Unlike other alloys, 305 represents true environmental friendliness and safety.
  1. Reasonably Priced- Generally, the cost of 305 SS is reasonably priced. Due to that, they are used in making both domestic and commercial items.
  1. Highly Durable- This SS alloy can stay very long when used for any production or to have any work done.
  1. It has an Elegant and Sleek Look- When used, it enhances the look of the final product. This is due to it’s modernized, chick, and sleek outlook.
  1. Availability of this Alloy – 305 stainless steel is very easy to access or get. All that is required is to find a reliable and trustworthy retailer or manufacturer.

305 Stainless Steel Grade

Austenitic Stainless Steel Structure
Austenitic Stainless Steel Structure

Chemical Properties

305 SS is now the material of choice for a variety of manufacturing purposes thanks to its countless worthy characteristics.

  1. Does 305 SS Rust?

You can expect 305 SS to come with excellent resistance to corrosion. Because of its excellent qualities to resist corrosion, its use is common.

So, even when it is exposed to hostile weather conditions for a prolonged time, it doesn’t rust or corrode.

  1. 305 Resistant to Salty Water

This alloy, nevertheless, might crack and tarnish in situations that have elevated chloride concentrations, such as seawater.

  1. Resistant to Alkalis and Acidic Environments

It is appropriate and will stand even in industrial conditions due to its superior tolerance to mild alkalis, acids, and chlorides, and its relatively low carbon provides improved resistant to carbide deposition when welding.

Generally, it has decent strength, great flexibility, and excellent formability. Moreover, 305 SS is readily welded and soldered to produce almost any form conceivable.

Physical Properties

305 Stainless Steel Sheet
305 Stainless Steel Sheet
  1. 305 Stainless Steel Magnetic Properties- Due to 305 SS high nickel concentration, it has a low magnetic conductivity. This means it is not magnetic.
  1. 305 SS Apparance- 305 SS looks shiny and smooth as well as a metallic look.
  1. Resistance to Heat.- 305 SS is ideally suited for usage in settings that must withstand exceptionally high temperatures or where there is a chance of oxidizing or scaling at higher levels.

Since it contains greater amounts of carbon comparable to other stainless steels, it can be made hard by cold working, increasing its strength without compromising on flexibility or machinability.

Nevertheless, it does not react well to hardening by heat treatments. Slowly heating 305 alloy to temperatures from 1450 and 1550oF (790 to 845oC) is recommended.

Mechanical Properties

Being informed about the mechanical properties of 305 helps you value it and appreciate its applications.

More variables that can be used in having the strength of 305 determined include:

  1. 305 yield tensile strength is about 260MPa
  2. Its ultimate tensile strength is about 585MPa
  3. Its modulus elasticity is about 193GPa
  4. Just about 82 Vickers hardness
  5. 50% elongation at break for a 50mm
  6. 86 GPa average of Shear modulus

Key Elements in 305 Stainless Steel Composition

The different elements of 305 SS make it unique. Below are these details:

  1. Carbon 0.12%
  2. Nickel 10.5-13.0%
  3. Sulfur 0.030%
  4. Chromium 17.0-19.0%
  5. Phosphorus 0.045%
  6. Silicon 0.75%
  7. Manganese 2.00%

Advantages of Stainless Alloy 305

  1. It comes with the finest corrosion-proof benefits.
  2. It lasts very long when used to make various products.
  3. Machining is simple when the right methods are used.
  4. Performs very well at temperatures that are not high.
  5. Flexible and easy to bend or use.
  6. It is easy to maintain.
  7. Is not easily hardened through heat treatment.

Fabricating and Machining 305 SS

The fabrication and machining of 305 SS will make it possible for you to transform this alloy into products that can be used.

  1. Machining

Achieving perfection with 305 machining is simple through slow speeds alongside heavy feeds. This done helps to mitigate the propensity of the material to glaze through the machining process.

This allow can be machined perfectly when traditional methods of machining are used rather than using the machining methods used for other austenitic SS.

  1. Welding

Welding 305 can be bit of a challenge due to how hard it is naturally.

Here, using the oxyacetylene method of welding is never the best way out.

It’s crucial to have the appropriate equipment and tools for the work in order to guarantee a good weld.

While this kind of steel is corrosion-proof, welding it causes cracks more frequently than with other materials.

Welding Stainless Steel
Welding Stainless Steel

Welding 305 Stainless Steel

It is not easy to weld 305 alloy. Truly, this kind of alloy highly resists corrosion. However, there are a lot of cracks you will experience with it compared to other stainless steel kinds.

In order to protect the welding arc from oxidizing or getting contaminated, special nonmagnetic clamps are frequently required.

They also help hold the material in place when welding. A competent welder can weld this alloy with reasonable ease and skill if the proper precautions are taken.

Machining 305 Grade Stainless Steel

It is easy to machine, however, the right precautions must be taken.

With 305 SS machining, the use of traditional methods always works. This is recommended due to the fact that it contains quite high carbon levels which in turn ensures cutting speed levels are clearly enhanced even as the best surface finishes are provided effortlessly.

It is ideal to use 309L filler metal with 305 alloy. This is required to provide the best corrosion-proof outcomes for users.

305 Stainless Steel Alloy 305 Heat Treatment

You can consider any of these heat treatments processes:

Types of Heat Treatments

  1. Hot working – For 305, hot working can be achieved from 1149 to 1260oC. Accelerated cooling is applied after this procedure to get the highest level of corrosion-proof benefits.
  1. Hardening – Heat treatments have no effect on the ability of 305 SS to become hard. Through the process of cold working, the strength and hardness of steel is greatly improved.
  1. Annealing – This SS alloy is perfect for annealing at temperatures from 1850 to 2050oF with quick cooling being introduced immediately.
  1. Cold working – This stainless steel because of its low work rate hardening process can be spun, drawn, and blanked.

How 305 SS Compare to other Stainless Steel Grades

305 Stainless Steel vs 304

  1. 305 SS falls within the family of austenitic SS alloys. Also, it has higher nickel properties or elements when compared to 304 alloy.
  2. 305 also has the very best bending features compared to 304.
  3. Resisting corrosion. Where resistance of corrosion is concerned, 305 SS is highly similar to 304.
  4. Carbon additions. The actual difference between 305 and 304 has to do with that little carbon addition to the 305 combination and percentages used in making these two alloys.

For example;

  • 305 has 0.12% of carbon while 304 has 0.04%.
  • 305 has 10.5 – 13% of nickel while 304 has 8-10.5%, etc.
  1. 305 costs a bit more than 304 due to the element inclusions that are a bit higher in 305.

305 Stainless Steel vs 316

  1. Resistance to heat – 305 has a higher melting range compared to 316.
  1. Cost – The price of 305 is much reasonable compared to 316.
  2. Application differences – 305 is used less in products for marine environments compared to 316.

Factors Affecting 305 Stainless Steel Price

  1. The supply and demand on the market.

Just like with any commodity, the less the commodity, the higher its price will be. This is mostly true where the steel market is concerned. So, the considering of present market supply and demand is vital to begin with. This determines the cost of steel pound.

  1. Cost of materials.

Steel is brought together to include different elements, mostly iron ore and recycled metals also known as scrap. When there is a shortage in this supply, there definitely will be an increase in 305 SS.

  1. Cost of shipping and labor.

Although the cost of locally made products are cheaper, it is not same when you import. Shipping and transportation costs change from time to time. So, you need to have that in mind.

  1. Fluctuations in currency.

The strength of various currencies where you reside and where order is being made from comes together to affect the cost as well.

Some other things that affect prices of 305 SS include maturity of the market, cost of production, worldwide political and economic developments, etc.

Forms in Which 305 SS Exist


These types of SS are used mostly in construction, chemical industries, machinery, agricultural machineries, containers, railway vehicles, bridges, automotive works, sporting facilities, and more.

  • 305 Stainless Steel Sheet
  • 305 SS Rods
  • Stainless Steel 305 Bars
  • 305 Stainless Steel Rolls
  • 305 SS pipes
  • 305 Steel strips
  • 305 Steel coils
  • Cut to length stainless steel

They come made in different sizes to ensure that users have the specific sizes to meet their every manufacturing or user needs.

305 Stainless Steel Applications

305 can be used to make the following:

  1. Barrels
  2. Cold head screws or rivets.
  3. Shells
  4. Deep drawn evelets
  5. Spun evelets
  6. Boat fittings
  7. Domestic and Commercial appliances, etc.


If you need a stainless steel with complete versatility in use, the right level of strength, and also one that doesn’t corrode with ease, the 303 allow will do.

You will save money when the right stainless steel kind is chosen for the right applications.

More Resources:

Stainless Steel Alloy 305 – Source: Combmet

Stainless Steel Grades – Source: Tuolian

304 vs 305 SS – Source: GNEE

How Stainless Steel is Made – Source: Tuolian

Grade 305 SS – Source: AZO Materials

One Stop Stainless Steel Supply.

Whether you need stainless steel materials for your business or fabrication projects, TuoLian is your best supplier. You can find all types, grades, and thicknesses based on your needs. Guaranteed that we provide the best quality at a reasonable cost.
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